The substitute imperfection in post-elastic analysis of steel frames / A. Machowski, I. Tylek // W: Progress in steel, composite and aluminium structures : proceedings of the XIth International Conference ... więcej

The substitute imperfection in post-elastic analysis of steel frames / A. Machowski, I. Tylek // W: Progress in steel, composite and aluminium structures : proceedings of the XIth International Conference on Metal Structures (ICMS-2006), Rzeszów, Poland, 21-23 June 2006 / ed. by Marian A. Giżejowski [et al.]. – Leiden : Taylor & Francis/Balkema, 2006. – (Balkema – Proceedings and Monographs in Engineering, Water and Earth Sciences). – S. 318-319 : tab., wykr. – Bibliogr. s. 319. – Pełny tekst zamieszczony na CD dołączonym do książki. – Data cop. 2006. – ISBN 978-0-415-40122-7 Book. – ISBN 978-0-415-40123-4 CD-ROM

Bases of conceptions of the substitute initial tilt utilized in elastic and post-elastic analyses of steel frames are under consideration. Application of the statistically based stationary gaussian random ... więcej

Bases of conceptions of the substitute initial tilt utilized in elastic and post-elastic analyses of steel frames are under consideration. Application of the statistically based stationary gaussian random noise model of initial column tilt and bar-disk mechanical model of skeletal structure enable justification of initial tilt reduction depending on the number of columns per story. Respective simple reduction of tilt formula proposed in Polish Standard appears sufficiently exact and conservative, under some conditions. However reduction of tilt depending on the number of stories is only motivated if elastic-plastic or rigid plastic analysis of frame is performed. Respective reduction coefficients proposed by different standard recommendations are unconservative according to results of numerical analysis presented in this paper.